Polystyrene nanoplastic exposure actives ferroptosis by oxidative stress-induced lipid peroxidation in porcine oocytes during maturation

文献类型： 外文期刊

第一作者： He, Yijing

作者： He, Yijing;Yu, Tianhang;Li, Heran;Sun, Qinfeng;Chen, Miaoyu;Lin, Yiyi;Wang, Weihan;Li, Qiao;Ju, Shiqiang;Li, Heran;Dai, Jianjun

作者机构：

关键词： Ferroptosis; Lipid peroxidation; Mitochondria; Polystyrene nanoplastics; Porcine oocyte; ROS

期刊名称：JOURNAL OF ANIMAL SCIENCE AND BIOTECHNOLOGY （ 影响因子：6.5； 五年影响因子：7.2 ）

ISSN： 1674-9782

年卷期： 2024 年 15 卷 1 期

页码：

收录情况： SCI

摘要： BackgroundPolystyrene nanoplastics (PS-NPs) are becoming increasingly prevalent in the environment with great advancements in plastic products, and their potential health hazard to animals has received much attention. Several studies have reported the toxicity of PS-NPs to various tissues and cells; however, there is a paucity of information about whether PS-NPs exposure can have toxic effects on mammalian oocytes, especially livestock. Herein, porcine oocytes were used as the model to investigate the potential effects of PS-NPs on mammalian oocytes.ResultsThe findings showed that different concentrations of PS-NPs (0, 25, 50 and 100 mu g/mL) entering into porcine oocytes could induce mitochondrial stress, including a significant decrease in mitochondrial membrane potential (MMP), and the destruction of the balance of mitochondrial dynamic and micromorphology. Furthermore, there was a marked increase in reactive oxygen species (ROS), which led to oocyte lipid peroxidation (LPO). PS-NPs exposure induced abnormal intracellular iron overload, and subsequently increased the expression of transferrin receptor (TfRC), solute carrier family 7 member 11 (SLC7a11), and acyl-CoA synthetase long-chain family member 4 (ACSL4), which resulted in ferroptosis in oocytes. PS-NPs also induced oocyte maturation failure, cytoskeletal dysfunction and DNA damage. Cotreatment with 5 mu mol/L ferrostatin-1 (Fer-1, an inhibitor of ferroptosis) alleviated the cellular toxicity associated with PS-NPs exposure during porcine oocyte maturation.ConclusionsIn conclusion, PS-NPs caused ferroptosis in porcine oocytes by increasing oxidative stress and altering lipid metabolism, leading to the failure of oocyte maturation.Graphical AbstractPS-NPs could enter oocytes, caused mitochondrial dysfunction and oxidative stress, induced lipid peroxidation and ferroptosis, which eventually resulted in failure of oocyte maturation.

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